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Nano-Scale Design of TiAl Alloys Based on beta-Phase Decomposition

Published online by Cambridge University Press:  26 February 2011

Fritz Appel ,
Michael Oehring  and
Jonathan Paul
Fritz Appel
Affiliation:
fritz.appel@gkss.de, GKSS Research Centre Geesthacht, Institute for Materials research, Max-Planck-Str. 1, Geesthacht, D-21502, Germany, +494152872504, +494152872534
Michael Oehring
Affiliation:
michael.oehring@gkss.de, Institute for Materials Research, GKSS Research Centre, Max-Planck-Str. 1, Geesthacht, D-21502, Germany
Jonathan Paul
Affiliation:
jonathan.paul@gkss.de, Institute for Materials Research, GKSS Research Centre, Max-Planck-Str. 1, Geesthacht, D-21502, Germany
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Abstract

Phase decomposition and ordering reactions in beta-phase containing TiAl alloys were utilized to establish a novel, previously unreported, type of laminate microstructure. The characteristic constituent of this microstructure are laths with a nanometer-scale substructure that are comprised of several stable and metastable phases. The constitution and microstructure of this novel type of alloy has been assessed by high-resolution transmission electron microscopy. Finally brief mention is made of the mechanical properties of the material.

Keywords

crystallographic structuredefectstransmission electron microscopy (TEM)
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 980: Symposium II – Advanced Intermetallic-Based Alloys , 2006 , 0980-II07-06
Copyright
Copyright © Materials Research Society 2007

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